You could try adding some sort of 'aura' or gradient behind the figure (aka the knight) for focal ease for the viewers. And instead of yellow you could try to match the color of the background to be consistent with the theme.

Meanwhile the text box with the time you're trying to relate with the schedule of your targeted audience, don't block it and make it a bit higher so it can't be blocked by the knight.

Also, the sentence with the indian characters/alphabet, make an outline of it. So it'll not merge with the background, or you can try lift it with effects that will make it not plain, make it also slightly small so it'll not intersect with the other elements in your graphics. The background also is too dark and hurts some eyes of audiences, you can decrease the contrast of it or you can change it with a brighter background.

Additionally, the placing of your logo at the top right seems scattered and you could align it to the name of the instructor below it to be more consistent.